-by what time ___you ____planting the trees?-By three o'clock that afternoon. A. did ,finish B. were ,finishing C.have ,finished D. had, finishing分析哦

熱心網友

d

熱心網友

我覺得是C.have ,finished 如果還原成陳述句　則是　I have finished planting the tree by three o'clock. 這里 by 的結構要用完成時應該很清楚吧

熱心網友

從回答上看that afternoon,可以看出是過去發生的事而從題意上又可以看出是"到你種完樹的時候為止,是什么時候了?"因此,不是過去完成時態就是一般過去是.而答案上又只有正確的一般過去時態,所以選A選項